Archdiocese of Cincinnati
Adams, Auglaize, Brown, Butler, Champaign, Clark, Clermont, Clinton, Darke, Greene, Hamilton, Highland, Logan, Mercer, Miami, Montgomery, Preble, Shelby, and Warren Counties
Diocese of Cleveland
Ashland, Cuyahoga, Geauga, Lake, Lorain, Medina, Summit, and Wayne Counties
Diocese of Columbus
Coshocton, Delaware, Fairfield, Fayette, Franklin, Hardin, Hocking, Holmes, Jackson, Knox, Licking, Madison, Marion, Morrow, Muskingum, Perry, Pickaway, Pike, Ross, Scioto, Tuscarawas, Union, and Vinton Counties
Diocese of Steubenville
Athens, Belmont, Carroll, Gallia, Guernsey, Harrison, Jefferson, Lawrence, Meigs, Monroe, Morgan, Noble, and Washington Counties
Diocese of Toledo
Allen, Crawford, Defiance, Erie, Fulton, Hancock, Henry, Huron, Lucas, Ottawa, Paulding, Putman, Richland, Sandusky, Seneca, Van Wert, Williams, Wood, and Wyandot Counties
Diocese of Youngstown
Ashtabula, Columbiana, Mahoning, Portage, Stark, and Trumbull Counties